It seems like Remedy have officially registered alanwake2.com, which just might be a big enough hint that we shall see a follow up pretty soon. Sam lake earlier teased the fans by tweeting ;
It's all true. “It will happen again, in another town, a town called Ordinary.” It's happening now.
which was then followed by the link below;
Tonight we'll have these speculations confirmed during the Microsoft conferences, which would be the announcement stage if such a sequel was to be announced.